在沿海防洪设计中整合红树林生长和失败
A Gijón Mancheño1, V Vuik2, B K van Wesenbeeck3
1Delft University of Technology, Stevinweg 1, Delft, 2628 CN, The Netherlands. a.gijonmancheno-1@tudelft.nl.
Scientific reports
|April 4, 2024
概括
红树林通过减少波浪能量来加强海岸保护,但它们的有效性取决于树木的年龄和稳定性. 适当的设计必须考虑到红树林的生长和抗风暴的适应性,以获得最佳的堤防性能.
科学领域:
- 沿海工程的工程.
- 生态生态学 生态生态学
- 自然危害 自然危害
背景情况:
- 红树林作为自然屏障,减轻海浪对海岸线的影响.
- 堤等沿海保护结构受益于向海的红树林带,可能减少建筑要求.
- 目前的设计往往过于简化或忽视红树林的特点,如前面区域和风暴稳定性.
研究的目的:
- 开发一个框架来评估红树林对堤防设计的影响.
- 将红树林生长动态和故障模式 (翻转,干部断裂) 纳入沿海保护评估中.
- 分析索内拉提亚叶林带对孟加拉国堤防设计的影响.
主要方法:
- 制定了一个框架来评估红树林对堤防设计的影响,考虑到森林宽度 (10-1000米).
- 该研究模拟了红树林随时间的增长和潜在的故障机制.
- 波弱及其与树木年龄和树冠出现的关系被分析为Sonneratia apetala.
主要成果:
- 对于狭窄的红树林 (<1公里),减波主要影响斜坡保护和岸侵蚀性,对5米水深的堤防高度的影响较小.
- 索内拉蒂亚塔拉 (Sonneratia apetala) 在大约10岁时表现出峰值波衰减能力,这是由于其被淹没的树冠区域.
- 较老的红树林 (>20年) 带有新兴的树冠,通过树干和根源减弱波浪,但易受风力负荷和气旋的影响,可能导致树木失败.
结论:
- 准确预测红树林的沿海保护需要整合树木表面积和稳定性的模型.
- 红树林的年龄和树冠的出现显著改变了波浪减弱机制和稳定性.
- 沿海保护设计必须考虑红树林的动态特征,以获得有效和有弹性的基础设施.
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